ISO 21028-1:2016

Name: ISO 21028-1:2016 — Cryogenic vessels — Toughness requirements for materials at cryogenic temperature — Part 1: Temperatures below -80 degrees C
SKU: ISO 21028-1:2016
Price: 12600 RUB
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Cryogenic vessels — Toughness requirements for materials at cryogenic temperature — Part 1: Temperatures below -80 degrees C

Название (английский):

ISO 21028-1:2016

Cryogenic vessels — Toughness requirements for materials at cryogenic temperature — Part 1: Temperatures below -80 degrees C

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 7
Дата публикации:: 20 сентября 2016 г.
Издание:: ISO IS 21028 edition 2 version 1
ICS:: 23.020.40

Тип поставки:

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Язык документа:

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Срок поставки:2 раб. дн. (перевод)

Цена:12 600 ₽

Описание (английский):

ISO 21028-1:2016 specifies the toughness requirements of metallic materials for use at a temperature below -80 °C to ensure their suitability for cryogenic vessels. ISO 21028-1:2016 is not applicable to unalloyed steels and cast materials.

Abstract

Похожие стандарты

Упомянутые в описании и другие стандарты ISO

Overview

ISO 21028-1:2016 - "Cryogenic vessels - Toughness requirements for materials at cryogenic temperature - Part 1: Temperatures below −80 °C" specifies toughness criteria and test requirements for metallic materials intended for service below −80 °C. It defines when impact testing is required, minimum acceptance levels for steels, specimen size and location, and acceptance/retest rules. Unalloyed steels and cast materials are excluded.

Key topics and requirements

Scope: Applies to metallic materials for cryogenic vessels at temperatures < −80 °C; excludes unalloyed steels and cast materials.

Toughness verification: Material producers or vessel manufacturers must guarantee toughness or verify it by impact testing per the standard.

Steels - minimum values:

Ferritic steels: 34 J/cm² (corresponds to 27 J for full-size specimen)
Austenitic steels: 40 J/cm² (corresponds to 32 J for full-size specimen)
Minimum lateral expansion: 0.38 mm

Lower-temperature service (colder than −196 °C):

Base metal, HAZ and weld metal must be tested.
Testing at −196 °C is acceptable provided either:
- 48 J/cm² minimum, or
- 40 J/cm² if welding procedure tests show similar values at the lower temperature, or
- 0.53 mm lateral expansion.

Aluminium and copper alloys: Generally have sufficient low‑temperature toughness; impact testing is not required (references: ISO 6361 series, EN standards).

Specimen and test rules:

Standard test cross-section 10 × 10 mm V‑notched (reduced sections allowed for thickness 5–10 mm per ISO 148‑1).
No impact testing on plates < 5 mm thickness.
Orientation: specimens taken transverse to rolling and parallel to rolling direction (notch perpendicular to plate surface).

Weld and HAZ test piece locations:

e ≤ 10 mm: 3 from weld centre + 3 from HAZ (6 total)
10 < e ≤ 20 mm: 3 weld + 3 HAZ (6 total)
e > 20 mm: two sets of 3 from upper and lower surfaces (12 total)

Acceptance criteria:

Minimums are averages of three specimens; single value may be as low as 70% of specified value.
Failed initial series may require a second series of three; combined acceptance rules apply (average of six ≥ min; max two values below min).

Applications and users

Who uses it: Designers, material suppliers, vessel manufacturers, welding engineers, QA/QC inspectors, and regulatory bodies involved in cryogenic storage and transport (LNG, industrial gases, laboratory cryostats).

Why use it: To ensure materials and welded joints maintain adequate toughness at cryogenic temperatures, reduce brittle fracture risk, and comply with product or regulatory standards for cryogenic vessels.

Related standards

ISO 148-1 (Charpy impact test method)

ISO 6361 series (wrought aluminium)

EN 10028‑4 / EN 10028‑7 (steel for pressure purposes)

EN 1652 / EN 1653 / EN 1981 / EN 12163 (copper/copper alloys)

ASME BPVC Section II (materials)

Keywords: ISO 21028-1:2016, cryogenic vessels, toughness requirements, impact test, weld testing, minimum working temperature, cryogenic materials.

ISO 21028-1:2016

Abstract

Похожие стандарты

Overview

Key topics and requirements

Applications and users

Related standards

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